Mainly depends on the purpose of going. If a one-hour walk is enough to see everything, it’s recommended to go for photography during the sunset hours on non-holidays for better photos.

The area of Shamian is not large, and it can be walked through in the most one hour at a leisurely pace.

If you’re walking and taking photos, two hours is enough. If you’re just there to enjoy the scenery, no need to linger too long—an hour is sufficient.
A leisurely walk for an hour should be enough, but if you’re shopping, eating out, and taking photos, it might take about three hours. It really depends on your personal arrangement and pace.
Mainly depends on whether you go to take photos or to enjoy the scenery and play around. If you just casually look around, it can be finished in one or two hours.
Mainly depends on the purpose of going. If a one-hour walk is enough to see everything, it’s recommended to go for photography during dusk on non-holidays for better shots.

The area of Shamian is not large; walking slowly, it takes no more than an hour to cover.

If you are walking and taking photos, two hours are enough. If you are just there to enjoy the scenery, an hour without too much delay is sufficient.
Take a leisurely stroll for an hour should be enough, if you’re shopping, eating out, and taking photos, it might take about three hours. It still depends on personal arrangement and pace.
Mainly, it depends on whether you go to take photos or to enjoy the scenery and play. If you just take a casual look, it can be done in one or two hours.